Immigration rights activist Lizbeth Mateo, 29, center, waits her turn to try and re-enter the United States through the Morley Gate Port of Entry from Nogales, Sonora, to Nogales, Ariz., on July 22.

Written by

the Arizona Republic Editorial Board

The Department of Homeland Security doesn't know or doesn't want us to know how effective its border-security efforts are.

This lack of information is a colossal failure that makes achieving comprehensive immigration reform even tougher.

With Homeland Security Secretary Janet Napolitano leaving, the information gap could be compounded with an accountability gap. Secretary or no secretary, President Barack Obama needs to lean on the DHS to fix this now. ...